\documentclass[50pt]{llncs}
\usepackage[usenames]{color}
\usepackage{gastex}

\begin{document}

% Loop width and height
\begin{center}
  \begin{picture}(118,28)(-7,-11) \compatiblegastexun
%     \put(-7,-11){\framebox(118,28){}}
%    \gasset{Nw=5,Nh=5,fillgray=1}

    \gasset{Nw=10,Nh=10,fillgray=1,Nmr=0,linewidth=1,size=40pt}
%  \node[Nw=15,Nh=6,Nmr=0](A)(25,0){rectangle}
\huge{
    \node(A_1)(-30,30){0}
    \node(A_2)(-20,30){1}
    \node(A_3)(-10,30){0}
    \node(A_4)(0,30){$\diamond$}
    \node(A_5)(10,30){$\diamond$}
    \node(A_6)(20,30){1}

    \node(B_1)(-30,0){0}
    \node(B_2)(-20,0){$\diamond$}
    \node(B_3)(-10,0){1}

    \node(C_1)(35,30){0}
    \node(C_2)(45,30){1}
    \node(C_3)(55,30){0}
    \node(C_4)(65,30){$\diamond$}
    \node(C_5)(75,30){$\diamond$}
    \node(C_6)(85,30){1}

    \node(D_1)(45,0){0}
    \node(D_2)(55,0){$\diamond$}
    \node(D_3)(65,0){1}

    \node(E_1)(-30,-30){0}
    \node(E_2)(-20,-30){1}
    \node(E_3)(-10,-30){0}
    \node(E_4)(0,-30){$\diamond$}
    \node(E_5)(10,-30){$\diamond$}
    \node(E_6)(20,-30){1}

    \node(F_1)(-10,-60){0}
    \node(F_2)(0,-60){$\diamond$}
    \node(F_3)(10,-60){1}

    \node(G_1)(35,-30){0}
    \node(G_2)(45,-30){1}
    \node(G_3)(55,-30){0}
    \node(G_4)(65,-30){$\diamond$}
    \node(G_5)(75,-30){$\diamond$}
    \node(G_6)(85,-30){1}

    \node(H_1)(65,-60){0}
    \node(H_2)(75,-60){$\diamond$}
    \node(H_3)(85,-60){1}
}
\gasset{linecolor=Green}
    \drawundirectededge(B_1,A_1){}
    \drawundirectededge(D_1,C_2){}
    \drawundirectededge(F_1,E_3){}
    \drawundirectededge(H_1,G_4){}

\gasset{linecolor=Red}
    \drawundirectededge(B_2,A_2){}
    \drawundirectededge(D_2,C_3){}
    \drawundirectededge(F_2,E_4){}
    \drawundirectededge(H_2,G_5){}

\gasset{linecolor=Blue}
    \drawundirectededge(B_3,A_3){}
    \drawundirectededge(D_3,C_4){}
    \drawundirectededge(F_3,E_5){}
    \drawundirectededge(H_3,G_6){}

  \end{picture}
\end{center}
 \end{document}


